JPS6241171A - Rotary drive type pan type brake gear for thread take up - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a rotationally driven countersunk braking device for a thread tensioning device.

BACKGROUND OF THE INVENTION A yarn tensioning device with a rotationally driven countersunk brake is known, for example, from DE 63 29 645 A1.

In order to be able to adapt the countersunk brake to non-uniformities in the thread or thread guide, such as thread changes or off-center thread contact, there is a elastomer elastic in the center between the drive shaft and the countersunk brake. It is already known to arrange intermediate parts.

SUMMARY OF THE INVENTION However, when a countersunk brake is suspended in this manner, the countersunk brake tends to tilt and vibrate, which in turn has an adverse effect on the yarn. This means that the braking action will be non-uniform, resulting in non-uniform loads being applied to the thread, which may cause the thick spots in the thread to be pulled too hard or even cause the thread to break. 2 Ru.

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotational drive for a yarn tensioning device that avoids the above-mentioned drawbacks, provides a uniform and vibration-free yarn braking action that protects the yarn, and provides a high yarn feeding speed. It is an object of the present invention to provide a countersunk type brake device of the type.

Means for Solving the Problems According to the invention, which solves the above-mentioned problems, a countersunk brake is provided in which the balls/ball bearings are centered by a device and pivotably journaled at the end of the countersunk brake support. The ball/ball holder is then driven externally to the device.

OPERATION The configuration of the present invention as described above allows the countersunk brake drive to be separated from the countersunk brake support and to allow the countersunk brake to be pivoted and shifted to all sides about a central point. By providing the possibility of damping, the desired good thread damping properties can be achieved. The countersunk brake no longer shifts eccentrically under the tension of the thread.

Embodiment According to a further embodiment of the invention, the countersunk brake has a ball socket, whereas the countersunk brake support has balls. The ball holder is advantageously arranged in the disk holding the countersunk brake.

The balls may be made of polished or even chrome-plated steel, for example, and the balls may be made of polished or even chrome-plated steel.
The disc forming the ball socket is made of a thermoplastic synthetic resin with self-lubricating properties, for example polyoxymethylene (POM). POM has high surface hardness and good friction properties.

According to another embodiment of the invention, a countersunk brake or
At least one entrainment device is provided for enabling a pivoting movement of the disc holding the countersunk brake, which entrainment device is operatively connected to the rotating device. The entrainment device also preferably has at least one opening in the disc holding the countersunk brake, in which opening
A driver member connected to the rotating device is engaged, the cross section of this opening being larger than the cross section of the driver member.

In order to obtain good entrainment and good mass compensation, it is advantageous to provide two entrainment elements facing each other and two corresponding openings facing each other.

The at least one driving element is also connected to a hollow shaft, preferably fixed to the frame, which is mounted and driven in rotation, and which hollow shaft surrounds the countersunk brake carrier.

The countersunk brake support is mounted for longitudinal displacement and is connected to a controllable loading device which makes it possible to load the countersunk brake in a defined manner.

According to a further embodiment of the invention, if the yarn feed speed is particularly high, the countersunk brake can be provided with a small number of elastic damping elements (one of which dampens the pivoting and wobbling movements of the countersunk brake). This damping element is preferably arranged between the countersunk brake lip and the disc with the bead, but it can also be arranged between the countersunk brake lip and the rotating device.

The damping element is preferably designed as a rubber-elastic ring or disk. A ring supported on the countersunk brake lip is provided to hold the damping member. This ring is likewise made of synthetic resin, whereas the countersunk brake itself is constructed as a metal shell.

According to another embodiment of the invention, the ball/ball holder is provided with a cover that protects the device against dust. The cover consists, for example, of a disk which is connected to a rotating device and supports at least one driver. This cover does not require a sealed connection.

According to a further embodiment of the invention, a ring is provided between the ring fixed on the hollow shaft of the rotating device and the ring connected to the countersunk brake rim, which acts simultaneously as an entrainment element and a damping element and as a dust protection element. An elastic disc is arranged which also serves as a comb. Such an arrangement provides the possibility of moving the countersunk brake on all sides around a central point in a particularly simple manner, which provides good entrainment and a countersunk brake system against dust. A protective structure is obtained.

According to a further embodiment of the invention, the damping member is configured as a ring, and the ring is formed on a countersunk brake lip or a ring connected to the countersunk brake lip. It extends into an annular groove and is fitted into another annular groove provided in a disc having a ball bearing.

Embodiment Next, the structure of the present invention will be specifically explained with reference to the embodiment shown in the drawings.

In one embodiment of the invention shown in FIGS. 1 and 2,
The thread tensioning device, of which only the parts necessary for understanding the invention are shown, is designated as a whole by the reference numeral 1. The machine frame 2 includes sliding bearings 3 and 4 as bearing parts for the hollow shaft 5. The hollow shaft 5 is part of a rotating device, generally designated 6. The rotating device further includes a gear 7 fixed to the hollow shaft 5 and a disk 8 made of synthetic resin and provided at one end of the hollow shaft 5.

The countersunk brake support 11 is supported by two sliding bearings 9, 10 on the hollow shaft 51/I.

The corrugated brake support 11 has a hollow shaft 5.
After being inserted into the slide bearing, it is held by a stop washer 12 to prevent it from slipping out of the sliding bearing. At the end of the countersunk brake support 11, there is a loading device P (which can load the countersunk brake 13 (described in detail later) in a predetermined manner.
(only schematically shown in FIG. 1) are connected.

The countersunk brake 13 is such that the balls/ball bearings are centered by the device and are pivotably mounted on the end of the countersunk brake support 11, and the balls/ball balls are driven outside the device. .

The ball/ball holder is generally designated by the reference numeral 20. ball 2
6 is provided at the end of the countersunk brake support 11. The ball receiver 27 is a disc 3 that supports the countersunk brake 11.
It is part of 3.

The outer edge 39 of the disc 33 is formed into a forest shape and bridges the countersunk brake 13 to tighten the countersunk brake 13.

While the countersunk brake 13 is centrally supported by the ball/ball support device 20 so as to be able to freely pivot around the center portion 40 of the ball 26, the countersunk brake 13 is driven by the rotating device 6. entraining device 41 with a working connection to
It is carried out by

The entraining device 41 includes a disc 3 holding a countersunk brake 13.
Two openings 47.48 arranged opposite each other in 3
and two entraining members 57, 58 which engage in these openings 47, 48. These entraining members 57.
58 is provided on the disc 8 connected to the hollow shaft 5.

The cross section of these entraining elements 57,58 is an opening 47,48.
The cross section is also small.

According to FIG. 1, a countersunk brake 96 is arranged opposite the countersunk brake 13 and is held by a countersunk brake support 5. Although the countersunk brake 96 may be constructed in the same manner as the countersunk brake 13, it is not necessary. The countersunk brake 96 is not necessary to explain the present invention and will not be described in detail.

During operation, the running yarn 60 or twisted yarn is handled by the yarn tensioning device 1.
stretched by. At this time, at least the countersunk brake 13 rotates with the aid of the gear 7 meshed with a gear system, not shown. At the same time, the load device P loads the countersunk brake support 11 with a predetermined force, for example pneumatically. Thread 60 typically connects countersunk brakes 13 and 96.
The two countersunk brakes or at least one countersunk brake 13 performs a wobbling movement as it runs off-center between the two countersunk brakes or at least one countersunk brake 13. With the arrangement according to the invention, this wobbling movement does not have a detrimental effect on the thread running or cause wear on the countersunk braking device.

If a thick spot is formed in the yarn 90, the countersunk brake 13 will wobble to avoid this, so that the yarn can be processed with as much care as possible.

The second embodiment of the present invention shown in FIGS. 6 to 7 and 20 to 24 differs from the first embodiment in the following points. In other words, countersunk brake 14 has an elastic member in the form of an O-ring 61 made of rubber, which dampens pivoting and wobbling movements. A ring 67 supported by a countersunk brake lip 66 is provided to retain this pivoting and wobbling damping element, namely the O-ring 61. The 01,1 ring 61 fits into an annular groove 68 of the ring 67 and another annular groove 69, namely an annular groove 69 formed in the disc 34 with the ball receiver 28 of the ball/ball receiver device 21. .

Disk 34 is particularly illustrated in FIGS. 20, 21 and 22. According to FIGS. 4 and 20, this disk 34
has two slit-like openings 49.50 located opposite one another, into which two driving elements 57.58 are inserted with play. These entraining elements 57, 58 are inserted into holes in the disk 70. This disk 70 (especially in FIGS. 23 and 24)
(see figure) is fitted into the hollow shaft 5.

According to FIG. 20, there are four wings 71 from the disk 34.
, 72, 73.74 protrude outward, and these four wings 71, 72° 73.74 are, according to FIG.
It is inserted into the four notches 75, 76, 77, and 78 of the ring 67 with some play.

The sixth embodiment illustrated in FIGS. 8 to 11 differs from the above two embodiments in the following points.

That is, in the ball/ball holder device 22 of the sixth embodiment, the ball holder 29 is arranged on the disc 35 that holds the countersunk brake 15. Disc 7 belonging to entrainment device 43
In this embodiment, the driver elements 57, 58 of 0 engage in the slit-shaped openings 5L 52 of the disk 35 (see direction of arrow C in FIG. 8 and in particular - FIG. 11).

According to the sectional view in FIG. 10, it can be seen that a ring 80 is provided which is supported on the countersunk brake lip 79 and which holds the damping member 62 in its entirety.

The damping member 62 is designed as a ring with a rectangular cross-section and is mounted in the annular groove 81 of the disc 35 . In the ring 80, the buffer member 62 is attached to the shoulder 82.
is supported by Another ring 83 pushed into the ring 80 has the role of reliably supporting the buffer member 62 with the ring 80.

The fourth embodiment of the present invention shown in FIGS. 12 and 13 has the following features.

In the ball/ball catch device 23, the ball catch 30 is arranged in a ring 38 which directly supports the countersunk brake 16.

In this fourth embodiment, the entraining device 46 has a ring 84 fixed to the hollow shaft 5 of the rotation device. This ring 8
4 is fixed by an adjustment screw 85. The damping element in the form of a disk 65 has the role of a dust protection element as well as the role of an entraining element and a damping element. The disc 65 is fixed to the ring 84 by a retaining ring 86 and to the outer edge 88 of the ring 38 by a cap ring 87. Since the countersunk brake lip 89 of the countersunk brake 16 is connected to the ring 38 and its outer edge 88, the disc 65 is also mechanically connected to the countersunk brake 16.

FIG. 12 shows a sectional view of the entire device, whereas FIG. 13 shows a sectional view of the rings 38.84 and the parts connecting these rings.

The fifth embodiment of the present invention illustrated in FIGS. 14 to 17 has the following features.

The ball/ball holder is in the device 24, and the ball holder 31 is in the s/g 9.
0 (see especially FIG. 13) within a disc 36 having a damping member in the form of a disc 64. 1st
According to FIG. 5, the disk 36 has a circular opening 53,54 for receiving the entraining device 440 and the entraining member 57, 58 of the disk 8.
have.

In this embodiment, the disc 8 has a funnel-shaped edge 91t, which serves as a cover to protect the device 24 against dust.

The countersunk brake edge 92 of the countersunk brake 17 has an inner race 93 and an outer race 94.

Disk 64 is particularly shown in FIG.

In addition, the inner race 93 and the outer race 94 are tightened.

In particular, FIG. 15 shows a plan view of the disk 36 and the buffer member 64, and FIG. 17 shows the countersunk brake 17,
A cross-sectional view of the discs 36, 64 and rings 93,94 is shown.

The sixth embodiment of the present invention shown in FIGS. 18 and 19 has the following features.

In the device 25, the ball/ball holder shown in FIG.
It is arranged within a disc 37 that supports the countersunk brake 18. In this sixth embodiment, the entraining device 45 has a disc 8 and entraining elements 57, 58 similar to those in the previous embodiment. The disc 37 is provided with mutually facing openings 55, 56 for the entraining members 57, 58. As can be seen particularly in the cross-sectional views of FIGS. 18 and 19, these openings are provided with a buffer member 63 configured as a rubber elastic ring having a rectangular cross-sectional shape fixed to the outer edge of the disk 3T. It has become so. The damping member 63 is glued to the countersunk brake 18. The ring 19 glued to the countersunk brake lip 95 serves in this embodiment as a cover to protect the ball/ball catch device 25 from dust.

The rings, each with a ball socket, are made of thermoplastic synthetic resin. Each ball holder surrounds the ball, but the extent to which the ball is surrounded is determined by the degree to which a certain resistance must be overcome in order to insert the ball holder over the ball during assembly, and the extent to which the ball holder must be overcome when disassembling the ball. This is the extent to which the ball receiver resists a predetermined resistance. The shape of this ball socket is particularly clear in FIGS. 5 and 13. Of course, the invention is not limited to the illustrated embodiment.

For example, in FIG. 13, the edge 91 of the disc 8 is extended to the outer race 94, so that this edge 91 can be kept airtight against the ingress of dust into the device 24.
- It can also be used as a cover. in this case,
It is advantageous if at least the edge 91 of the disc 8 is made of rubber-elastic material.

Effects As described above, according to the rotationally driven countersunk brake device for a yarn tensioning device of the present invention, a yarn braking action that is uniform, vibration-free, and gentle on the yarn can be obtained at a high yarn feeding speed.

[Brief explanation of drawings]

1 is a partial longitudinal sectional view of a thread tensioning device having a countersunk brake according to a first embodiment of the present invention; FIG. 2 is a sectional view showing details of the countersunk brake of FIG. 1; FIG. is a partial vertical sectional view of the countersunk brake according to the second embodiment, FIG. 4 is a view seen from the direction of arrow a in FIG. 6, and FIG. 5 shows details of the countersunk brake shown in FIG. 6. Fig. 6 is a view taken from the direction of arrow a in Fig. 7, Fig. 7 is a sectional view taken along the line ■-■ in Fig. 6, and Fig. 8 is a partial enlarged longitudinal cross-sectional view of the illustration. 9 is a view in the direction of the arrow a of FIG. 8, and FIG. 10 shows another detail of the countersunk brake of FIG. 8. Longitudinal sectional view, 1st
Figure 1 is shown in Figure 10, and arrow C in Figure 8 of the countersunk brake.
12 is a partial longitudinal sectional view of the countersunk brake according to the fourth embodiment, and FIG. 13 is a partial longitudinal sectional view showing details of the countersunk brake shown in FIG. 12. , FIG. 14 is a partial vertical cross-sectional view of the thigh-shaped brake according to the fifth embodiment, FIG. 15 is a view of FIG. 14 viewed from the direction of arrow d,
Fig. 13 is a partially enlarged longitudinal sectional view of the dish-shaped brake shown in Fig. 14, Fig. 17 is a partial longitudinal sectional view showing details of the dish-shaped brake shown in Fig. 14, and Fig. 18 is a partial longitudinal sectional view showing the details of the dish-shaped brake shown in Fig. 14. Partial longitudinal sectional view of the countersunk brake according to the sixth embodiment, No. 19
The figure shows details of the countersunk brake shown in FIG. 18. FIG. 20 is a plan view of the disk 34 of the countersunk brake shown in FIG. 6, and FIG. xx in figure 20
22 is an enlarged view of part e in FIG. 21, and FIG. 23 is an enlarged plan view of the disc 70 of the countersunk brake shown in FIGS. 6 and 8. , and FIG. 24 is a cross-sectional view taken along the double hexagonal line of FIG. 23. 1... Thread tension device, 2... Machine frame, 3, 4.
... Sliding υ bearing, 5 ... Hollow shaft, 6 ... Rotating device, 7
...gear, 8...disc, 9.10...sliding bearing,
DESCRIPTION OF SYMBOLS 11... Countersunk brake support, 12... Stop washer, 13.14, 15, 16.17.18... Countersunk brake, 19... Ring, 20, 22.24...
・Ball/Ball holder is a device, 26...Ball, 27, 29.30・
・・Ball receiver, 33, 34, 35. 36 ・・Disc, 38
...Ring, 39...Outer edge, 40...Center, 41
．． 43,44,46... Entraining device, 47°48.49
, 50, 51. 52... Opening, 57° 58... Entraining member, 59... Countersunk brake support, 60... Thread, 61... OIJ ring, 62... Buffer member, 64.
65...disk, 66...countersunk brake edge, 67...
... Ring, 68.69 ... Annular groove, 70 ... Disc, 71, 72, 73.74 ... Wing, 75°76
．． 77.78...Notch, 79...Countersunk brake edge, 80...Ring, 81...Annular groove, 82...
Shoulder, 83.84...Ring, 85...Adjustment screw, 86...Retaining ring, 87...Cap ring, 8
8... Outer edge, 89... Countersunk brake edge, 90...
・Ring, 91...Edge, 92...Countersunk brake edge, 93...Inner race, 94...Outer race, 95...
・Flat type brake edge, 96...Flat type brake, P・
... Load device 1 ... countersunk brake support

Claims (1)

[Claims] 1. In a rotationally driven countersunk brake device for a yarn tensioning device, countersunk brakes (13, 14, 15, 16, 1
7, 18) are ball/ball receiving devices (20, 21, 22, 2
3, 24, 25) and is pivotably journaled at the end of the countersunk brake support (1), which ball/ball receiver device (20, 21, 22, 23)
, 24, 25) A rotationally driven countersunk brake device for a thread tensioning device, characterized in that it is driven externally. 2. Countersunk brakes (13, 14, 15, 16, 17,
18) is the ball receiver (27, 28, 29, 30, 31, 32
), whereas a countersunk brake support (
11) has a ball (16).
Countersunk brake device as described in . 3. The ball rests (27, 28, 29, 30, 31, 32) are countersunk brakes (13, 14, 15, 16, 17, 1
8) discs (33, 34, 35, 36, 37,
38). A countersunk brake device according to claim 2, wherein the brake device is arranged in a countersunk brake device according to claim 2. 4. Countersunk brakes (13, 14, 15, 16, 17,
18) or at least one entrainment device (41, 4) enabling a pivoting movement of the disc holding this countersunk brake
2, 43, 44, 45, 46), the entraining device being operatively connected to the rotating device (6). A countershape brake device. 5. The entraining device (41, 42, 43, 44, 45) is countersunk brake (13, 14, 15, 16, 17, 18)
At least one opening (47, 48, 49, 5) provided in the disc (33, 34, 35, 36, 37) holding the
0, 51, 52, 53, 54, 55, 56), and the entraining member (57, 58) connected to the rotating device (5, 6, 7, 8, 70) is engaged in this opening. 5. A countersunk brake device according to claim 4, in which the cross-section of the opening is larger than the cross-section of the entraining member (57, 58). 6. At least one entrainment member (57, 58) is connected to a hollow shaft (5) fixed to the frame, which is mounted and driven in rotation, which hollow shaft (5) is connected to the countersunk brake support (11). ).) A countersunk brake device according to claim 4 or claim 5. 7. A countersunk brake support (11) is supported for longitudinal displacement, and the countersunk brake support (13, 14)
, 15, 16, 17, 18) is connected to a controllable loading device (P) for predetermined loading. Device. 8. Countersunk brake (14, 15, 16, 17, 18)
is at least one countersunk brake (14, 15, 1
6, 17, 18) has an elastic buffer member (61, 62, 63, 64, 65) that dampens the turning and wobbling motion of the device according to any one of claims 1 to 7. Countersunk brake device according to item 1. 9. The buffer members (61, 62, 63, 64) are connected to the countersunk brake edges (66, 79, 92, 95) and the ball holder (28).
, 29, 30, 31) with disks (33, 34, 35
, 36, 37), the countersunk brake device according to claim 8. 10. The buffer member (65) is a countersunk brake edge (89)
9. A countersunk brake device according to claim 8, wherein the brake device is arranged between the rotating device (5, 6, 7, 84). 11. A countersunk brake device according to any one of claims 8 to 10, wherein the buffer members (61, 62, 63) are configured as rubber elastic rings. 12. A countersunk brake device according to any one of claims 8 to 10, wherein the buffer members (64, 65) are configured as rubber-elastic discs. 13. Ring (67) supported on countersunk brake lips (66, 79) for retaining damping members (61, 62).
, 80), the countersunk brake device according to any one of claims 8 to 12. 14. A cover (65; 8, 91; 19) for protecting the ball/ball receiving device (23, 24, 25) from dust is provided, according to claims 1 to 13. The countersunk brake device according to any one of the items. 15. The cover (8) is connected to the rotating device (6);
15. A countersunk brake device according to claim 14, comprising a disc carrying at least one entrainment element (57, 58). 16, ring (8) fixed to the hollow shaft of the rotating device (6)
4) Ring (3) connected to countersunk brake lip (89)
8), a rubber-elastic disc (65) is arranged between the two and the two members, the rubber-elastic disc (65) having the role of a dust protection member as well as the role of an entraining member and a buffer member.
The countersunk brake device according to any one of items 1 to 14. 17. The damping member (61) is configured as an O-ring, which O-ring is connected to the countersunk brake lip (66) or to the ring connected to the countersunk brake lip (66).
It extends into the annular groove (68) formed in the ball receiver (
Countersunk brake according to any one of claims 8 to 11, which is fitted in a further annular groove (69) provided in the disc (34) with a Device.